4.3gxi bad temp sensor?

[alldodge]

Could it be a fuel issue? If I have the bad motor running and start the good one, it’ll cause the bad one to cut off.

Anything is possible but both idling shouldn't cause one to die. If electrical connections are bad, maybe

Alternator outputs the same when running, should be around 14V+

 

[happychapboater]

Anything is possible but both idling shouldn't cause one to die. If electrical connections are bad, maybe

Alternator outputs the same when running, should be around 14V+

When the bad motor was running and I had given it throttle to stay running and I turn the other motor on, the bad engine would shut down like it was cut off from fuel.

 

[alldodge]

Sure sounds like an electrical problem